US189929A - Improvement in filter-racks - Google Patents

Improvement in filter-racks Download PDF

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Publication number
US189929A
US189929A US189929DA US189929A US 189929 A US189929 A US 189929A US 189929D A US189929D A US 189929DA US 189929 A US189929 A US 189929A
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rack
funnel
filter
racks
improvement
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/085—Funnel filters; Holders therefor

Definitions

  • This filter-rack is intended to support the filtering paper in funnels of any angle or. height, keeping the paper entirely ,from the sides of the funnel, and allowing the passage of air at the sides, and a more rapid and perfect filtration.
  • the rack is secured to the top and bottom of funnel, to admit the pouring out of liquids from the same; and, as it is made of only two pieces, maybe easily cleaned, is handier in use, and cheaper in manufacture, than the present upright wire-racks.
  • the invention consists of a filter-rack made of a spirally-coiled wire, attached by top hook and jointed center link with lower hook to the top and bottom of funnel.
  • A represents the spiral main part of my improved filter-rack, and B a swinging link that is appliedto the center of part A.
  • the main part A is made of a piece of spirally-wound spring-wire, which is attached by a hook or other fastening device, a, to the upper edge of the funnel, and by a hook, b, at the lower end of the jointed link to the bot tom edge of the neck of the funnel, as shown in the drawing.
  • the spiral wire-rack may be readily applied to funnels having diierent height, slope of sides, ⁇ greater or less length of neck, &c., the spiral part adjusting itself readily to any funnel, keeping the paper entirely clear of the funnel, which is not the case in the upright wire-racks, in which the plaited filter paper slips through the spaces of the rack and bears against the sides of funnel, preventing thereby the passage of air and hindering filtration.
  • the attachment of the rack to the top and bottom of funnel admits the more convenient handling of the funnel for pouring out part of the liquid or removing the same. may also be left in the funnel while using the same for other purposes.
  • the spiral Wire rack takes vup but little room when not in use, as it assumes a flat shape, so as to be readily shipped.
  • the rack being made of two pieces, offers no projecting parts for the settling of impurities, so as to be kept clean with great facility.
  • the spiral .rack extends around the filtering paper, prevents its contact W-ith the funnel, so as to accelerate the filtering process, and is attached to the funnel in a sufied.
  • a filter-rack made of a spirally-coiled Wire, having outer hooks, and of a jointed center link with lower hook end, substantially as herein shown and described.

Description

UNITED STATES PATENT OEETcEo BYRON FENNER, OF WESTFIELD, YORK.
lMlROVEMENT lN FILTER-RACKS.
Specification forming part of Letters Patent No. 189,929, dated April 24, 1877; application iile March 12, 1877.
To all whom it may concern Be it known that I, BYRON FENNER, of Westfield, in the county of Chautauqua, and State of New York, have invented a new and Improved Filter-Rack, of which the following is a speciiication:
The accompanying drawing shows a side elevation of my improved lter-rack.-
This filter-rack is intended to support the filtering paper in funnels of any angle or. height, keeping the paper entirely ,from the sides of the funnel, and allowing the passage of air at the sides, and a more rapid and perfect filtration. The rack is secured to the top and bottom of funnel, to admit the pouring out of liquids from the same; and, as it is made of only two pieces, maybe easily cleaned, is handier in use, and cheaper in manufacture, than the present upright wire-racks.
The invention consists of a filter-rack made of a spirally-coiled wire, attached by top hook and jointed center link with lower hook to the top and bottom of funnel.
In the drawing, A represents the spiral main part of my improved filter-rack, and B a swinging link that is appliedto the center of part A.
The main part A is made of a piece of spirally-wound spring-wire, which is attached by a hook or other fastening device, a, to the upper edge of the funnel, and by a hook, b, at the lower end of the jointed link to the bot tom edge of the neck of the funnel, as shown in the drawing.
The spiral wire-rack may be readily applied to funnels having diierent height, slope of sides, `greater or less length of neck, &c., the spiral part adjusting itself readily to any funnel, keeping the paper entirely clear of the funnel, which is not the case in the upright wire-racks, in which the plaited filter paper slips through the spaces of the rack and bears against the sides of funnel, preventing thereby the passage of air and hindering filtration.
The attachment of the rack to the top and bottom of funnel admits the more convenient handling of the funnel for pouring out part of the liquid or removing the same. may also be left in the funnel while using the same for other purposes. The spiral Wire rack takes vup but little room when not in use, as it assumes a flat shape, so as to be readily shipped. The rack, being made of two pieces, offers no projecting parts for the settling of impurities, so as to be kept clean with great facility. The spiral .rack extends around the filtering paper, prevents its contact W-ith the funnel, so as to accelerate the filtering process, and is attached to the funnel in a sufied.
2. A filter-rack, made of a spirally-coiled Wire, having outer hooks, and of a jointed center link with lower hook end, substantially as herein shown and described.
BYRON FENNER.
Witnesses JEROME LA DUE, IcHABoD THAYEE.
The rack
US189929D Improvement in filter-racks Expired - Lifetime US189929A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034417A (en) * 1959-09-08 1962-05-15 George R Bunn Coffee making machine
US3034418A (en) * 1959-04-02 1962-05-15 George R Bunn Coffee holding means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034418A (en) * 1959-04-02 1962-05-15 George R Bunn Coffee holding means
US3034417A (en) * 1959-09-08 1962-05-15 George R Bunn Coffee making machine

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